Moist-electric generators using biomass Juncus effusus fibers with 3D microchannels for wearable applications

Su, Lingling; Zhang, Chunhua; Tang, Wenyang; Fu, Zhuan; Gong, Junyao; Qin, Jieyao; Li, Li; Xia, Liangjun; Xu, Weilin

doi:10.1016/j.cej.2024.156106

Chemical Engineering Journal

2024

DOI: 10.1016/j.cej.2024.156106

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Moist-electric generators using biomass Juncus effusus fibers with 3D microchannels for wearable applications

Lingling Su,

Chunhua Zhang,

Wenyang Tang

et al.

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High‐Performance and Anti‐Freezing Moisture‐Electric Generator Combining Ion‐Exchange Membrane and Ionic Hydrogel

Zhang,

Qin,

Zhou

et al. 2024

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Moisture‐electric generators (MEGs), which convert moisture chemical potential energy into electrical power, are attracting increasing attention as clean energy harvesting and conversion technologies. However, existing devices suffer from inadequate moisture trapping, intermittent electric output, suboptimal performance at low relative humidity (RH), and limited ion separation efficiency. This study designs an ionic hydrogel MEG capable of continuously generating energy with enhanced selective ion transport and sustained ion‐to‐electron current conversion at low RH by integrating an ion‐exchange membrane (IEM‐MEG). A single IEM‐MEG exhibits a maximum open‐circuit voltage (VOC) of 0.815 V and a short‐circuit current (ISC) of 101 µA at 80% RH. Even at a low RH of 10%, a stable VOC of 0.43 V and ISC of 11 µA can be generated. Moreover, the antifreeze performance of the device is improved by adding LiCl, which significantly expands its operational range in low‐temperature environments. Finally, a simple series‐parallel connection of six IEM‐MEGs can yield an enhanced VOC of 4.8 V and a ISC of ≈0.6 mA, and the scalable units can directly power commercial electronics. This study provides new insights into the design of MEGs that will advance the development of green energy conversion technologies in the future.

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High‐Performance and Anti‐Freezing Moisture‐Electric Generator Combining Ion‐Exchange Membrane and Ionic Hydrogel

Zhang,

Qin,

Zhou

et al. 2024

Small

View full text Add to dashboard Cite

show abstract

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Moist-electric generators using biomass Juncus effusus fibers with 3D microchannels for wearable applications

Cited by 1 publication

References 45 publications

High‐Performance and Anti‐Freezing Moisture‐Electric Generator Combining Ion‐Exchange Membrane and Ionic Hydrogel

High‐Performance and Anti‐Freezing Moisture‐Electric Generator Combining Ion‐Exchange Membrane and Ionic Hydrogel

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